The show's producers are out to make Anarky, the "Joker" of the first season; he'll be the main antagonist throughout the first introductory episodes.
This guy, who we assumed was Ultra-Humanite is actually Silver Monkey, a member of the League of Assassins. This character makes Professor Pyg and Mr. Toad look like A-listers because I was pretty sure he was an original creation till a quick search revealed that the character appeared in "Detective Comics #685" back in 1995.
Here's a bit more background on the villains as disclosed by USA Today:
"The eco-terrorist duo of Professor Pyg (Brian George) and Mr. Toad (Udo Kier) — who first appeared in Grant Morrison's recent Batman & Robin comic — tussle with Batman in Saturday's premiere episode, and will be followed by the likes of the politically charged Anarky (CSI's Wallace Langham), the jewel thief Magpie (Grey DeLisle), and Ra's al Ghul (Lance Reddick) and the League of Assassins, who played a role in director Christopher Nolan's recent Batman films." Lady Shiva is also confirmed to appear as a member of the League of Assassins.
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Running Time: 30 minutes
Season One Premiere: July 13, 2013
MPAA Rating: Tv-PG
Starring: Anthony Ruivivar, Sumalee Montano, JB Blanc, Greg Ellis, Kurtwood Smith, Udo Kier, Lance Reddick, Tisha Terrasini Banker, Cree Summer
Directed by: Sam Liu
Producers: Glen Murakami, Mitch Watson, Sam Register (executive producer)
"Beware the Batman" is an American produced animated cartoon program airing on Cartoon Network starting July 13, 2013. Sam Reigster serves as executive producer with Glen Murakami and Mitch Watson as the hands-on showrunners. The voice cast features Anthony Ruivivar as Batman, Lance Reddick ad Ra's Al Ghul, Cree Summer as Magpie, Sumalee Montano as Katana, JB Blanc as Alfred and Kurtwood Smith as Lt. Gordon."